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Cornerstone · Grades 3–5 Keystones #1 20 June 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 10 = 40

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 1:3:3

    Answer: 13, 39 and 39
  5. 5. Statistics Mean

    Find the mean of: 13, 8, 14, 6, 4

    Answer: 9

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